Issue 4, 2020

New bimolecular photoinitiating systems based on terphenyl derivatives as highly efficient photosensitizers for 3D printing application

Abstract

New 2-(diethylamino)-4,6-diphenyl-benzene-1,3-dicarbonitrile derivatives were synthesized and proposed as high-performance photoinitiators in conjunction with iodonium salts for: (i) the cationic polymerization of epoxides, (ii) the free-radical polymerization of acrylates, and (iii) the synthesis of interpenetrating polymer networks (IPNs) from acrylate/epoxy blends. Investigated photoinitiating systems exhibit initiating efficiency upon exposure to soft irradiation conditions of visible light-emitting diodes (LEDs) with emission maxima at 405 nm and 420 nm. Excellent polymerization profiles are obtained during photopolymerization processes. The studied photoinitiating systems were also used for photosensitive resins for laser writing/3D printing experiments upon exposure to a laser diode at 405 nm. The photophysical and photochemical properties, i.e., absorption, steady-state photolysis and fluorescence spectroscopy, of terphenyl derivatives were studied. A photoinitiation mechanism related to the production of cations and radicals was studied using fluorescence quenching experiments, laser flash photolysis, cyclic voltammetry and electron spin resonance.

Graphical abstract: New bimolecular photoinitiating systems based on terphenyl derivatives as highly efficient photosensitizers for 3D printing application

Supplementary files

Article information

Article type
Paper
Submitted
14 out 2019
Accepted
03 dez 2019
First published
05 dez 2019

Polym. Chem., 2020,11, 922-935

New bimolecular photoinitiating systems based on terphenyl derivatives as highly efficient photosensitizers for 3D printing application

E. Hola, J. Ortyl, M. Jankowska, M. Pilch, M. Galek, F. Morlet-Savary, B. Graff, C. Dietlin and J. Lalevée, Polym. Chem., 2020, 11, 922 DOI: 10.1039/C9PY01551E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements